chore: remove "NamedFilter(userProvided: true, string: codeigniter4/framework)"

::warning file=/home/runner/work/playground/playground/composer.json,line=0,col=0::"NamedFilter(userProvided: true, string: codeigniter4/framework)" exclusion is a zombie

Author: kenjis

composer-unused.php

@@ -6,6 +6,5 @@
 use ComposerUnused\ComposerUnused\Configuration\NamedFilter;
 
 return static function (Configuration $config): Configuration {
-    return $config
-        ->addNamedFilter(NamedFilter::fromString('codeigniter4/framework'));
+    return $config;
 };